Book Image

MERN Quick Start Guide

By : Eddy Wilson Iriarte Koroliova
3 (1)
Book Image

MERN Quick Start Guide

3 (1)
By: Eddy Wilson Iriarte Koroliova

Overview of this book

The MERN stack is a collection of great tools—MongoDB, Express.js, React, and Node—that provide a strong base for a developer to build easily maintainable web applications. With each of them a JavaScript or JavaScript-based technology, having a shared programming language means it takes less time to develop web applications. This book focuses on providing key tasks that can help you get started, learn, understand, and build full-stack web applications. It walks you through the process of installing all the requirements and project setup to build client-side React web applications, managing synchronous and asynchronous data flows with Redux, and building real-time web applications with Socket.IO, RESTful APIs, and other concepts. This book gives you practical and clear hands-on experience so you can begin building a full-stack MERN web application. Quick Start Guides are focused, shorter titles that provide a faster paced introduction to a technology. They are for people who don't need all the detail at this point in their learning curve. The presentation has been streamlined to concentrate on the things you really need to know.
Table of Contents (8 chapters)

CRUD operations using ExpressJS' route methods

ExpressJS' router has equivalent methods to handle HTTP methods. In other words, the HTTP methods POST, GET, PUT, and DELETE can be handled by this code:

      /* Add a new user */'/users', (request, response, next) => { }) 
      /* Get user */ 
      app.get('/users/:id', (request, response, next) => { }) 
      /* Update a user */ 
      app.put('/users/:id', (request, response, next) => { }) 
      /* Delete a user */ 
      app.delete('/users/:id', (request, response, next) => { })  

It's good to think of every URL as a noun and because of that a verb can act on it. In fact, HTTP methods are also known as HTTP verbs. If we think about them as verbs, when a request is made to our RESTful API, they can be understood as:

  • Post a user
  • Get a user
  • Update...